The economy is in the toilet. The unemployment rate continues to climb. Home values have plummeted. What's there to smile about?

How about your freedom, your health and — most importantly — your loved ones? Those are just a few of the things associated with true enduring happiness, said social psychologist David Myers.

Q. What should we know about happiness during times like these?

A. Economic growth has not led to happiness over time. Growth and downfalls can lead to short-term happiness, but we rebound to our normal level of happiness after a while.

People who value high income, occupational success and prestige more than having very close friends and a close marriage are twice as likely to describe themselves as "fairly" or "very" unhappy.

The need to belong runs deeper, it seems, than any need to be rich. For all but the very poor, more money buys no more than a temporary surge of happiness.

Q. What does predict happiness?

A. Perhaps the most important predictor is close, supportive relationships. We're social animals. Forty percent of married adults say they're happy, whereas 23 percent of never-married adults say they're happy.

But just being married doesn't mean you're happy. You can be in an unhappy marriage.

Q. There's also a correlation between religion and happiness. Are religious people happy or are happy people attracted to religion?

A. Causal traffic is two-way between happiness and marriage and could be with religion, too. Happy people tend to be more social in general.

Q. What do people wrongly associate with happiness?

A. Age. People think there are happy and unhappy times in life, like the midlife-crisis years. There is more fluctuation and intensity among teens and younger people. But happiness and unhappiness is pretty much the same across age groups.

There aren't gender differences either, although they can express unhappiness differently. Women are more likely to be depressive, and men are more likely to be alcoholic.

Q. What do you find most surprising about happiness among people?

A. Biology. There are genetic influences on happiness. Some people are more biologically predisposed to happiness. But like cholesterol, it can be tweaked through aerobic exercise, getting plenty of sleep and other things.

Q. Can happiness be a bad thing?

A. Happiness taken to the extreme is mania. Taken to the extreme, it can do harm. Manic people make foolish decisions.

Q. And unhappiness can be a good thing?

A. When bad things happen in our lives, unhappiness alerts us to do something about it.